A tool for installing an interference fit bush in a blind hole part

Abstract

The utility model discloses a tool of blind hole part installation interference fit bushing relates to the technical field of aircraft assembly, and its technical scheme main points are: including the mandrel, the one end detachably connected with the pressure block of mandrel, is equipped with the vertical guide block on the mandrel, a plurality of through -holes are arranged on the outer wall of vertical guide block, and the side of mandrel away from pressure block is equipped with the bushing and fixed block, and the bushing is slidably connected on the mandrel, and the diameter of fixed block is greater than the diameter of mandrel. The utility model through the vertical setting of mandrel and vertical guide block has guaranteed the accurate positioning of bushing in the installation process, has improved the accuracy and reliability of installation, has solved the problem that bushing is not easy to guarantee vertical pressure in when bushing installation, long time etc, has improved the assembly efficiency, has guaranteed the product quality.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of aircraft assembly, more particularly, it relates to a tool for installing interference fit bushing in blind hole part. BACKGROUND

[0002] The bushing is an indispensable wear-resistant part in aircraft assembly, and the common interference fit bushing installation method includes the press-in method, the thermal expansion (part) assembly method and the cold shrink (bushing) assembly method.

[0003] The cold shrink assembly method refers to shrinking the bushing by using a cooling agent and then assembling the bushing into the fitting position, which is the most commonly used bushing installation method and has no obvious influence on the fatigue strength of the part.

[0004] In summary, when the cold shrink assembly method is used to install the bushing, how to design a simple and convenient bushing installation tool is a technical problem to be solved by the technical personnel in the field. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies in the prior art, the utility model aims to provide a tool for installing an interference fit bushing in a blind hole part.

[0006] The above technical purpose of the utility model is achieved by the following technical scheme: a tool for installing an interference fit bushing in a blind hole part, comprising a mandrel, one end of the mandrel is detachably connected with a pressing block, a vertical guide block is sleeved on the mandrel, a plurality of through holes are arranged on the outer wall of the vertical guide block in an array, a bushing and a fixing block are arranged on the side of the mandrel away from the pressing block, the bushing is slidably connected to the mandrel, and the diameter of the fixing block is greater than the diameter of the mandrel

[0007] The utility model is further provided as follows: the mandrel and the vertical guide block are arranged perpendicular to each other on the side away from the pressing block.

[0008] The utility model further sets up: the inner thread is set up in the briquetting piece, the outer thread matched with the inner thread is equipped on the upper arm of the mandrel, the briquetting piece is connected with the mandrel threadedly.

[0009] The utility model further sets up: the gasket is equipped between the bush and the mandrel.

[0010] The utility model further sets up: the fixed block adopts magnet and is made, the fixed block and the mandrel are connected by magnetism.

[0011] The utility model further sets up: the vertical guide block is cooperated with the gasket, the bush and the mandrel outer circle gap.

[0012] Summarized above, the utility model has following beneficial effect: the utility model bush installation tool simple structure, convenient operation, the perpendicular setting of mandrel and vertical guide block has guaranteed the accurate positioning of bush in the installation process, has improved the accuracy and reliability of installation, has solved the problem that bush is not easy to guarantee vertical pressure in when bush installation, long time etc., has improved assembly efficiency, has guaranteed product quality. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the structural schematic diagram of the utility model;

[0014] Figure 2 It is the structural schematic diagram before installing the bush of the utility model;

[0015] Figure 3 It is the structural schematic diagram after installing the bush of the utility model.

[0016] In the drawing: 1, briquetting piece;2, mandrel;3, vertical guide block;4, gasket;5, bush;6, fixed block;7, part. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0018] In order to better describe and illustrate the embodiments of the present application, one or more drawings can be referred to, but the additional details or examples used to describe the drawings should not be considered as limiting the scope of the utility model creation, the presently described embodiments or any one of the preferred modes of the present application.

[0019] In the description of the utility model, it is necessary to explain that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the position relationship based on the position relationship shown in the drawings, and are only for the convenience of describing the utility model, and are not intended to indicate that the device must have a specific orientation or be operated in a specific orientation, so it cannot be understood as a limitation on the utility model.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the specification of the present application is only for the purpose of describing specific embodiments and is not intended to limit the present application.

[0021] The utility model will be described in detail below in combination with the drawings and embodiments.

[0022] A tool for installing an interference fit bushing in a blind hole part, as shown in Figure 1 The utility model discloses a bushing installation tool, which comprises a mandrel 2, a pressing block 1 is detachably connected to one end of the mandrel 2, a vertical guide block 3 is sleeved on the mandrel 2, specifically, the mandrel 2 and the vertical guide block 3 are arranged perpendicularly to each other on the side away from the pressing block 1, a plurality of through holes are arranged on the outer wall of the vertical guide block 3, a bushing 5 is slidably connected to the mandrel 2, and a fixing block 6 is arranged on the side of the mandrel 2 away from the pressing block 1, the diameter of the fixing block 6 is larger than that of the mandrel 2, the pressing block 1 is arranged to enable an operator to apply force to the pressing block 1 when installing the bushing 5, the diameter of the pressing block 1 is larger than that of the mandrel 2, so that the operator can save labor during installation, the vertical guide block 3 is arranged to enable the vertical guide block 3 to abut against the surface of a part 7 when the bushing 5 is installed, and then the operator can vertically press the bushing 5 into the hole of the part 7 by applying force, and the fixing block 6 is arranged to prevent the bushing 5 from being separated from the mandrel 2 when the bushing 5 slides on the mandrel 2, thereby preventing the bushing 5 from being lost and improving work efficiency.

[0023] The pressing block 1 is provided with an inner thread, the upper arm of the mandrel 2 is provided with an outer thread matched with the inner thread, the pressing block 1 is threadedly connected with the mandrel 2, the thread connection is realized by the mutual engagement of the inner thread and the outer thread, the contact area between the mandrel 2 and the pressing block 1 is increased, the connection strength of the two is improved, the stability and reliability of the connection are ensured, and meanwhile, the thread connection has the advantage of convenient disassembly, so that when the part needs to be repaired or replaced, the disassembly can be completed by rotating and unscrewing, and complex operation is not needed.

[0024] The fixed block 6 is detachably connected at one end of the mandrel 2, specifically, the fixed block 6 is made of a magnet, and the fixed block 6 and the mandrel 2 are connected by magnetism, the magnet fixing mode simplifies the installation and dismounting process of the assembly, and the parts 7 can be quickly installed and dismounted without complex tools, so that when the operator sets the bushing 5 on the mandrel 2, then fixes the fixed block 6 at one end of the mandrel 2, the bushing 5 cannot be separated from the mandrel 2, and then it is immersed in the cooling liquid for cooling, after the cooling is completed, the fixed block 6 is removed from one end of the mandrel 2, and then the one end of the mandrel 2 is aligned with the hole on the part 7, and the next installation operation can be performed, through the above setting, the stability of the bushing 5 in the cooling process is ensured, and the efficient dismounting of the fixed block 6 also improves the work efficiency.

[0025] The gasket 4 is arranged between the bushing 5 and the mandrel 2, specifically, the gasket 4 is made of metal material or hard plastic, the vertical guide block 3 is in clearance fit with the gasket 4, the bushing 5 and the outer circle of the mandrel 2, through the arrangement of the gasket 4, the gasket 4 can reduce the direct contact between the bushing 5 and the mandrel 2, reduce the abrasion rate, reduce friction, and prolong the service life of the parts, since the vertical guide block 3 is in clearance fit with the gasket 4, the bushing 5 and the outer circle of the mandrel 2, the cooling liquid can fully cool the bushing 5, so that more effective heat exchange is realized, the cooling efficiency is improved, and when the bushing 5 is installed, the clearance fit makes the part 7 easier to assemble and disassemble, and the installation efficiency is improved.

[0026] The above only describes preferred embodiments of the present application, and the protection scope of the present application is not limited to the above embodiments, and any technical solution falling within the concept of the present application belongs to the protection scope of the present application. It should be noted that for ordinary skilled persons in the technical field, some improvements and decorations without departing from the principles of the present application are also considered as the protection scope of the present application.

Claims

1. A tool for installing an interference fit bushing on a blind hole part, characterized in that: Includes a mandrel (2), one end of which is detachably connected to a pressure block (1), a vertical guide block (3) is sleeved on the mandrel (2), and several through holes are arrayed on the outer wall of the vertical guide block (3). A bushing (5) and a fixing block (6) are provided on the side of the mandrel (2) away from the pressure block (1). The bushing (5) is slidably connected to the mandrel (2), and the diameter of the fixing block (6) is larger than the diameter of the mandrel (2).

2. The tool for installing an interference fit bushing (5) on a blind hole part (7) according to claim 1, characterized in that: The mandrel (2) and the vertical guide block (3) are arranged perpendicularly to each other on the side facing away from the pressure block (1).

3. The tool for installing an interference fit bushing (5) on a blind hole part (7) according to claim 1, characterized in that: The pressure block (1) has an internal thread, and the upper arm of the mandrel (2) has an external thread that matches the internal thread. The pressure block (1) and the mandrel (2) are threadedly connected.

4. A tool for installing an interference fit bushing (5) on a blind hole part (7) according to claim 1, characterized in that: A gasket (4) is provided between the bushing (5) and the spindle (2).

5. A tool for installing an interference fit bushing (5) on a blind hole part (7) according to claim 1, characterized in that: The fixing block (6) is made of magnets, and the fixing block (6) and the spindle (2) are magnetically connected.

6. A tool for installing an interference fit bushing (5) on a blind hole part (7) according to claim 4, characterized in that: The vertical guide block (3) is fitted with the outer circle of the gasket (4), bushing (5) and spindle (2) with clearance.

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